initial PoC for distro configuration buildup

Distributions should not reiterate on building block lists:
similar ones should inherit good features (and development)
from the basic up to the more sophisticated ones,
like seen at http://www.altlinux.org/WhiteLabel

Makefile

@@ -0,0 +1,2 @@
+distro/%:
+	make -C distro $(@:distro/%=%)

distro/Makefile

@@ -0,0 +1,14 @@
+clean:
+	@:> config.mk
+
+distclean:
+	@rm config.mk
+
+bare: clean
+	@echo BASE_LISTS='base kernel' >> config.mk
+
+server-base: bare
+	@echo BASE_LISTS+='server-base' >> config.mk
+
+server-light: server-base
+	@echo BASE_LISTS+='kernel-wifi' >> config.mk